CN109839554A - Parameters measurement module - Google Patents
Parameters measurement module Download PDFInfo
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- CN109839554A CN109839554A CN201711218481.3A CN201711218481A CN109839554A CN 109839554 A CN109839554 A CN 109839554A CN 201711218481 A CN201711218481 A CN 201711218481A CN 109839554 A CN109839554 A CN 109839554A
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Abstract
The present invention relates to electric system more particularly to a kind of parameters measurement modules.Its real-time online, there is multiplicity, comprehensive electrical parameter measuring module.Including central processing module, A/D conversion module, display unit, communication module, signal conditioning module, AC voltage sampling module, AC current collecting module and frequency sampling module；The central processing module connects the A/D conversion module, display unit, communication module, the A/D conversion module connection signal conditioning module, the signal conditioning module connection AC voltage sampling module and AC current collecting module；The frequency sampling module is connected with central processing module, and the central processing module uses dsp processor.
Description
Technical field
The present invention relates to electric system more particularly to a kind of parameters measurement modules.
Background technique
With the development of economy, each industry and civilian electricity consumption are significantly increased, and electric energy loss increasingly sharpens.China's unit
GDP (GDP) energy consumption will reduce by 20%；On Copenhagen climate Conference in 2009, Chinese Government proposes control
Greenhouse gas emission target, arrive the year two thousand twenty, the CO2 emission of Chinese entity GDP will than 2005 decline 40% to
45%.Therefore energy-saving and emission-reduction are shouldered heavy responsibilities, and effective electric energy-saving measure is taken, and have Great significance.Only to electric energy into
Row accurately and reliably measures, could be from truly saving electric energy.Therefore need each electricity consumption inside electricity unit crucial
Point installs a set of device that can continue, accurately, reliably monitor electrical parameter respectively.
Summary of the invention
The present invention provides a kind of parameters measurement module aiming at defect of the existing technology.
To achieve the above object, the present invention adopts the following technical scheme that, including central processing module, A/D conversion module, aobvious
Show unit, communication module, signal conditioning module, AC voltage sampling module, AC current collecting module and frequency sampling module.
The central processing module connects the A/D conversion module, display unit, communication module, the A/D conversion module
Connection signal conditioning module, the signal conditioning module connection AC voltage sampling module and AC current collecting module；It is described
Frequency sampling module is connected with central processing module, and the central processing module uses dsp processor.
Further, the AC voltage sampling module is carried out by alternating voltage of the precision resistance to A phase, B phase and C phase
Voltage division processing, then voltage DC signal is promoted to by reference voltage, and after being handled by signal conditioning module, export respectively to
A/D conversion module.
Further, the AC current collecting module: the alternating current of A phase, B phase and C phase passes through Current Mutual Inductance respectively
Device and reference voltage are converted to voltage DC signal, and after being handled by signal conditioning module, output to A/D conversion module.
Further, the frequency sampling module: A phase or C phase alternating voltage are turned by precision resistance and reference voltage
The voltage DC signal changed is sent into hysteresis loop comparator, then is exported to the input port CAP of dsp processor.
Further, the signal conditioning module includes second-order low-pass filter circuit, operational amplifier and feedback resistance net
The WeChat ID that the AC voltage sampling module exports is filtered out high frequency interference signal by network, and is converted to suitable ADC measurement
The small voltage signal of range is then sent to the A/D conversion module.
Beneficial effect of the present invention compared with prior art.
The present invention is a kind of continuous long-time, real-time online, has multiplicity, comprehensive electrical parameter measuring module.It surveys
Accuracy of measurement is high, can provide various types of electrical parameters in real time, very high cost performance may be implemented；And there is communication module, because
This can easily realize on-line real time monitoring.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and detailed description.The scope of the present invention not only limits to
In the statement of the following contents.
Fig. 1 invention's principle block diagram.
Specific embodiment
As shown in Figure 1, the present invention includes central processing module, A/D conversion module, display unit, communication module, signal tune
Manage module, AC voltage sampling module, AC current collecting module and frequency sampling module.
The central processing module connects the A/D conversion module, display unit, communication module, the A/D conversion module
Connection signal conditioning module, the signal conditioning module connection AC voltage sampling module and AC current collecting module；It is described
Frequency sampling module is connected with central processing module, and the central processing module uses dsp processor.
Further, AC voltage sampling module is divided by alternating voltage of the precision resistance to A phase, B phase and C phase
Processing, then voltage DC signal is promoted to by reference voltage, and by signal conditioning module processing after, exported respectively to A/D
Conversion module.
Further, AC current collecting module: the alternating current of A phase, B phase and C phase pass through respectively current transformer and
Reference voltage is converted to voltage DC signal, and after being handled by signal conditioning module, output to A/D conversion module.
Further, frequency sampling module: A phase or C phase alternating voltage are converted by precision resistance and reference voltage
Voltage DC signal is sent into hysteresis loop comparator, then is exported to the input port CAP of dsp processor.
Further, the signal conditioning module includes second-order low-pass filter circuit, operational amplifier and feedback resistance net
The WeChat ID that the AC voltage sampling module exports is filtered out high frequency interference signal by network, and is converted to suitable ADC measurement
The small voltage signal of range is then sent to the A/D conversion module.
Real-time online of the present invention, there is multiplicity, comprehensive electrical parameter measuring module.Measurement accuracy is high, can mention in real time
For various types of electrical parameters, very high cost performance may be implemented；And there is communication module, therefore can easily realize online reality
When monitor.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments, those skilled in the art should understand that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (5)
1. parameters measurement module, which is characterized in that including central processing module, A/D conversion module, display unit, communication module,
Signal conditioning module, AC voltage sampling module, AC current collecting module and frequency sampling module；
The central processing module connects the A/D conversion module, display unit, communication module, the A/D conversion module connection
Signal conditioning module, the signal conditioning module connection AC voltage sampling module and AC current collecting module；The frequency
Sampling module is connected with central processing module, and the central processing module uses dsp processor.
2. parameters measurement module according to claim 1, it is characterised in that: the AC voltage sampling module passes through precision
Resistance carries out voltage division processing to the alternating voltage of A phase, B phase and C phase, then is promoted to voltage DC signal by reference voltage, and lead to
After crossing signal conditioning module processing, exported respectively to A/D conversion module.
3. parameters measurement module according to claim 1, it is characterised in that: the AC current collecting module: A phase, B phase
Pass through current transformer respectively with the alternating current of C phase and reference voltage is converted to voltage DC signal, and passes through signal condition
After resume module, output to A/D conversion module.
4. parameters measurement module according to claim 1, it is characterised in that: the frequency sampling module: by A phase or C phase
The voltage DC signal that alternating voltage is converted by precision resistance and reference voltage, is sent into hysteresis loop comparator, then export to DSP
Manage the input port CAP of device.
5. parameters measurement module according to claim 1, it is characterised in that: the signal conditioning module includes step low-pass
The WeChat ID that the AC voltage sampling module exports is filtered out height by filter circuit, operational amplifier and feedback resistive network
All interference wave signals, and the small voltage signal of suitable ADC measurement range is converted to, it is then sent to the A/D conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218481.3A CN109839554A (en) | 2017-11-28 | 2017-11-28 | Parameters measurement module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218481.3A CN109839554A (en) | 2017-11-28 | 2017-11-28 | Parameters measurement module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109839554A true CN109839554A (en) | 2019-06-04 |
Family
ID=66881363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711218481.3A Pending CN109839554A (en) | 2017-11-28 | 2017-11-28 | Parameters measurement module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109839554A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114624517A (en) * | 2022-03-09 | 2022-06-14 | 国家海洋技术中心 | General resistance, voltage and frequency signal acquisition module |
-
2017
- 2017-11-28 CN CN201711218481.3A patent/CN109839554A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114624517A (en) * | 2022-03-09 | 2022-06-14 | 国家海洋技术中心 | General resistance, voltage and frequency signal acquisition module |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190604 |